C4.4 and C6.6 Engines for Caterpillar Built Machines Multiposition Switch Setup Caterpillar


Multiposition Switch Setup
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1.1. Number of Switch Inputs
2.1. Physical Position
3.1. Input 4, Input 3, Input 2, Input 1
4.1. Physical Position Enabled
5.1. Logical Position
6.1. Engine Speed (in RPM)

The multi-position throttle switch is the throttle input for this application. The switch allows the operator to select high rpm or low rpm.

The "Throttle Configuration Screen" of the electronic service tool requires additional information.

Number of Switch Inputs

This parameter is the total number of switches that will be used. The switches may be individual switches or a ganged rotary switch.

Table 1
Range  Default 
1 to 4 

Physical Position

This parameter is non-programmable. The parameter is used to signify the position of the rotary switch.

Input 4, Input 3, Input 2, Input 1

The number of these non-programmable parameters that are visible depends on the value that is programmed into the "Number of Switch Inputs" parameter. "Open" signifies that the switch is in the OFF position. "Ground" signifies that the switch is in the ON position.

Physical Position Enabled

If "Yes" is selected from the drop-down menu, the ECM sets the engine rpm to the value that is programmed into the "Engine Speed" for the configuration of the switch that is defined for that Physical Position.

Table 2
Value  Default 
No
Yes 
No 

Logical Position

The Logical Position is the order that is required by the user for a unique Physical Position.

Table 3
Range  Default 
1 to 16 

Engine Speed (in RPM)

The "Engine Speed" is the programmed engine rpm for a particular position of the multi-position throttle switch.

If the ECM detects a switch combination that has been configured as "No", a fault code will be generated. In this situation, the ECM will ignore the multi-position switch until the keyswitch is cycled through OFF and ON.

Table 4
Logical Throttle Switch Position  Throttle Switch Input 1  Throttle Switch Input 2  Engine Speed 
Grounded  Open  1200 
Open  Grounded  2310 

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